Describe the A-buffer polygon scan conversion algorithm by using 44 sub-pixels for each pixel.

problem 2:

It is possible to symbolize continuous tone grayscale images by using just black ink on white paper because of the limitations in the human visual system. Describe how and why.

problem 3:

describe an algorithm that, given a grayscale image, will generate a black and white (bi-level) image of four times the resolution in each dimension which gives a good approximation to the grayscale image.

problem 4:

describe an algorithm that draws a Bezier cubic curve to a specified tolerance by using straight lines.

problem 5:

describe an algorithm for clipping the line against a rectangle.

problem 6:

A Bezier cubic curve could be clipped and drawn by using the algorithm in part (a) to generate straight lines and the algorithm in part (b) to do the clipping. describe a more efficient algorithm which draws a Bezier cubic curve clipped against a rectangle.

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